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Concept

Traitements conservateurs des bois

Publications associées (16)

Statistical accuracy for estimations of large wood blockage in a reservoir environment

Anton Schleiss, Michael Pfister, José Pedro Gamito de Saldanha Calado Matos, Paloma Furlan

The blockage of weirs or bridges by in-stream wood can reduce the flood discharge capacity, leading to hazardous situations. To assess the related risk, blocking probabilities quantifications are needed. However, large wood has a random behaviour and it is ...

SPRINGER2020

Topology of Pretreated Wood Fibers Using Dynamic Nuclear Polarization

David Lyndon Emsley, Jeremy Luterbacher, Pierrick Berruyer, Arthur César Pinon, Jasmine Viger-Gravel, Wu Lan

In the continuously developing field of lignocellulosic biomass, high-yield lignin depolymerization processes are sought to optimize its productivity and profitability. Recently, formaldehyde stabilization during lignin extraction and biomass pretreatment ...

2019

Performance Assessment of Double-Layered Timber Plate Shells using Alternative Structural Systems

Yves Weinand, Petras Vestartas, Anh Chi Nguyen

With recent advances in digital fabrication, innovative wood-wood connections inspired by ancient timber joining techniques have recently been applied to various free-form timber plate structures. This paper focuses on the recently developed double-layered ...

International Centre for Numerical Methods in Engineering (CIMNE)2019

Design framework for the structural analysis of free-form timber plate structures using wood-wood connections

Yves Weinand, Petras Vestartas, Anh Chi Nguyen

Geometrically complex timber plate structures using wood-wood connections are increasingly designed thanks to digital fabrication. Whereas their fabrication has been automated using computer-aided design programming, research focused on the development of ...

2019

Modelling Workflow for Segmented Timber Shells using Wood-wood Connections

Yves Weinand, Julien Gamerro, Petras Vestartas, Nicolas Henry Pierre Louis Rogeau

This paper presents a modelling method based on planarization for double-curved segmented timber shell made from quad polygons and assembled by wood-wood connections. The inspiration is taken from timber dome structures, where solid timber walls were built ...

Springer2019

Preventing Lignin Condensation to Facilitate Aromatic Monomer Production

Jeremy Luterbacher, Wu Lan

Lignin is the most abundant aromatic polymer in nature and as such is an attractive source of aromatic molecules. Efficient lignin utilization will also likely play a key role in the economic success and sustainability of biomass valorization schemes. Howe ...

2019

Impact of CO2 injection on the hydro-mechanical behaviour of a clay-rich caprock

Lyesse Laloui, Valentina Favero

The safe storage of CO2 in deep reservoir units requires an efficient sealing of the overlaying caprock. The acidic environment caused by the dissolution of CO2 into the pore fluid can induce changes in the microstructure of the material over the long term ...

2018

Experimental investigation of the influence of integral mechanical attachments on structural behaviour of timber folded surface structures

Yves Weinand, Christopher Werner Matthias Robeller, Andrea Stitic

Structural behaviour of timber folded surface systems greatly depends on the connections ability to transfer the occurring forces between the adjacent elements and finally to the supports. This paper focuses on multiple tab-and-slot joints (MTSJ), where di ...

2018

Stochastic analysis of clear timber as a structural material

Alireza Farajzadeh Moshtaghin

Wood/timber has been widely used for house and bridge construction. It is a widely available natural material that necessitates low energy for the production, following simple processes. The environmentally friendliness, together with the low cost of raw m ...

EPFL2016

Back-Contacted Silicon Heterojunction Solar Cells

Andrea Tomasi

EPFL2016

Integral Mechanical Attachment for Timber Folded Plate Structures

Christopher Werner Matthias Robeller

Timber folded plate Structures combine the advantages of timber as a construction material, such as its carbon-dioxide storage, low energy production and favorable weight-to-strength ratio, with the structural efficiency and elegance of folded surface stru ...

EPFL2015

Micromechanics of creep and relaxation of wood. A review COST Action E35 2004-2008: Wood machining - micromechanics and fracture

Parviz Navi

Wood, like all polymeric materials, shows viscoelastic behaviour. The time dependent behaviour of wood depends on material anisotropy, temperature, moisture and stresses. To predict the behaviour of wood, numerous mathematical models have been developed la ...

De Gruyter2009

Chemical investigations on the thermal behaviour of wood during friction welding

Bernhard Stamm, Julius Natterer

Friction welding is a new technology in the course of which wood pieces are subjected to circular or linear movements in a welding machine. The wood in the contact zone is heated and melted. Aiming at a better understanding of the thermal alteration of woo ...

2006

Aminosilanes and hyperbranched polymers for adhesion tailoring between metallic oxides and polyethylene

Gabrielle Pax

Bonding between polyolefins and steel is widely found in applications as diverse as steel wire/cord reinforced polymers, and automotive components where steel and thermoplastics are commonly used. As polyolefins are highly unreactive, because of their low ...

EPFL2005

Vieillissement et fiabilité des parcs de poteaux bois des réseaux de lignes aériennes : l'intérêt du contrôle non destructif

Yann Benoit

The reliability of new overhead electric and telecommunication lines depends principally on the quality of their support structures. These structures are generally made of wood, metal or concrete. The complexity of a natural substance such as wood requires ...

EPFL2004

Etude du phénomène de l'élimination de la mémoire de forme du bois densifié par post-traitement thermo-hydro-mécanique

Frédéric Heger

Owing to its porous cellular structure and polymeric components, wood can be easily shaped in its transversal direction when it is heated and has sufficient water content. Thanks to this thermohydrous behaviour many manufacturing processes such as densific ...

EPFL2004